Best selling combined Speed/Distance Log and Echo Sounder in standard 110mm square size. Suitable for open cockpit mounting. Technical Specifications: Depth Sounder in feet and meters Shallow alarm and keel offset Complete with well proven Transducers Speed in MPH, Knots and Km/H Trip and Total Distance in Miles, Nautical Miles, and Kilometers Speed Limit Alarm Face Cover includedThis product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns. Specifications: Instrument Function: Multifunction Box Dimensions: 4"H x 8"W x 10"L WT: 2.95 lbs UPC: 609722871143 Owner&';s Manual (pdf)Brochure (pdf)